Systems and method for control of a power take-off clutch
First Claim
Patent Images
1. A method, comprising:
- measuring a parameter indicative of a measured torque in a PTO clutch;
determining an incremental torque based at least in part on proportional-integral-derivative (PID) control logic;
determining a command torque, wherein the command torque is a sum of the measured torque and the incremental torque;
generating a control signal, wherein a current of the control signal corresponds to the command torque and a pressure in a cylinder of the PTO clutch;
providing the control signal to the PTO clutch;
reducing the incremental torque if an engagement power exceeds an engine power output; and
ceasing engagement if an energy absorbed by the clutch exceeds an energy rating of the PTO clutch.
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Abstract
A method includes measuring a parameter indicative of a measured torque in a PTO clutch, determining an incremental torque based at least in part on proportional-integral-derivative (PID) control logic, determining a command torque, wherein the command torque is a sum of the measured torque and the incremental torque, generating a control signal, wherein a current of the control signal corresponds to the command torque and a pressure in a cylinder of the PTO clutch, providing the control signal to the PTO clutch, reducing the incremental torque if an engagement power exceeds an engine power output, and ceasing engagement if an energy absorbed by the clutch exceeds an energy rating of the PTO clutch.
23 Citations
20 Claims
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1. A method, comprising:
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measuring a parameter indicative of a measured torque in a PTO clutch; determining an incremental torque based at least in part on proportional-integral-derivative (PID) control logic; determining a command torque, wherein the command torque is a sum of the measured torque and the incremental torque; generating a control signal, wherein a current of the control signal corresponds to the command torque and a pressure in a cylinder of the PTO clutch; providing the control signal to the PTO clutch; reducing the incremental torque if an engagement power exceeds an engine power output; and ceasing engagement if an energy absorbed by the clutch exceeds an energy rating of the PTO clutch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory computer readable medium comprising executable instructions that when executed cause a processor to:
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determine an incremental torque based at least in part on proportional-integral-derivative (PID) control logic; determine a command torque, wherein the command torque is a sum of a current torque and the incremental torque, wherein the current torque is determined based on a measure parameter indicative of the current torque; generate a control signal, wherein the current of the control signal corresponds to the command torque and a pressure in a cylinder of the PTO clutch; provide the control signal to the PTO clutch; reduce the incremental torque if an engagement power exceeds an engine power output; and cease engagement if an energy absorbed by the clutch exceeds an energy rating of the PTO clutch. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system, comprising:
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a PTO clutch configured to couple and decouple a PTO shaft and a drive shaft, wherein the PTO clutch comprises; a cylinder; a piston disposed within the cylinder; a valve fluidly coupled to the cylinder and configured to restrict or allow fluid flow between the cylinder and a fluid reservoir; and a solenoid coupled to the valve and configured to control a position of the valve; a controller in communication with the solenoid, wherein the controller is configured to; receive a current torque in a PTO clutch, wherein the current torque is based on a measured parameter indicative of the current torque in the PTO clutch; determine an incremental torque based at least in part on PID control logic; determine a command torque, wherein the command torque is a sum of a current torque and the incremental torque; generate a control signal, wherein a current of the control signal corresponds to the command torque and a pressure in a cylinder of the PTO clutch; provide the control signal to the solenoid; reduce the incremental torque if an engagement power exceeds an engine power output; and cease engagement if an energy absorbed by the clutch exceeds an energy rating of the PTO clutch. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification